After seven years of research, the assembly of no fewer than 624 parts, three patents, and the combination of two inventions – Greubel Forsey revolutionises one of the oldest watchmaking complications, the perpetual calendar, by incorporating an equation of time.
Greubel Forsey is proud to announce that on Wednesday, November 8, 2017, the Jury of the Grand Prix d’Horlogerie de Genève (GPHG) has awarded Greubel Forsey’s own QP à Équation the ‘Calendar Watch Prize’.
